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How does Access-Control-Allow-Origin header work?
...in Resource Sharing) header.
When Site A tries to fetch content from Site B, Site B can send an Access-Control-Allow-Origin response header to tell the browser that the content of this page is accessible to certain origins. (An origin is a domain, plus a scheme and port number.) By default, Site ...
innerText vs innerHTML vs label vs text vs textContent vs outerText
I have a dropdown list which is populated by Javascript.
6 Answers
6
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Remove empty lines in text using Visual Studio
...
Since Visual Studio 2012 changed its regex syntax, the original answers by Ala translate into the following in VS 2012:
Remove single blank lines
Old:
^:b*$\n
New:
^(?([^\r\n])\s)*\r?$\r?\n
Visual Studio 2013 (thanks to BozoJoe and Joe Johnston):
^\s*$\n
Remove double blank lines
Old:...
Hidden features of Perl?
What are some really useful but esoteric language features in Perl that you've actually been able to employ to do useful work?
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What are paramorphisms?
...'s para. Compare with catamorphism, or foldr:
para :: (a -> [a] -> b -> b) -> b -> [a] -> b
foldr :: (a -> b -> b) -> b -> [a] -> b
para c n (x : xs) = c x xs (para c n xs)
foldr c n (x : xs) = c x (foldr c n xs)
para c n [] = n
foldr c n [] ...
How to merge a specific commit in Git
I have forked a branch from a repository in GitHub and committed something specific to me. Now I found the original repository had a good feature which was at HEAD .
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Explain Morris inorder tree traversal without using stacks or recursion
...thout using stacks or recursion ? I was trying to understand how it works, but its just escaping me.
8 Answers
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download and install visual studio 2008 [closed]
Ok, this may be the dumbest question ever, but I swear I searched for the answer and don't know what to do.
6 Answers
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B-Tree vs Hash Table
In MySQL, an index type is a b-tree, and access an element in a b-tree is in logarithmic amortized time O(log(n)) .
5 Answ...
How to call base.base.method()?
... people still return to this question even after many time. Of course it's bad practice, but it's still possible (in principle) to do what author wants with:
class SpecialDerived : Derived
{
public override void Say()
{
Console.WriteLine("Called from Special Derived.");
var ...